Am alga mating-pan



(No Model.)

M. P. BOSS.

AMALGAMATING PAN.)

No. 325,387. Patented Sept. 1, 1885.

FIG. 1.

N. PETERS. Pbolo-hlhognpbev. Waihmgion. 1L 0.

UNTTED STATES PATENT warren.

MARTIN I BOSS, OF OAKLAND, CALIFORNIA.

AMALGAMATlNG-PAN.

SPECIFICATION forming part of Letters Patent No. 325,387, datedSeptember 1, 1885/ (No model.)

To all whom it may concern:

Be it known that I, MARTIN 1?. Boss, of the city of Oakland, Alamedacounty, State of California, have invented an Improvement inAmalgamatingPans; and I hereby declare the following to be a full,clear, and exact de scription of the same.

My invention relates to the class of amalgamatingpans, and my inventionconsists in a steam chamber or space for the base and cone of the pan,and in the peculiarity of its construction, and of the bottom of thepan, as I shall hereinafter fully explain.

The object of my invention is to provide the greatest possibleheating-surface.

Referring to the accompanying drawings, Figure 1 is a vertical sectionof my pan. Fig. 2 is a bottom view, a section only of the outer portionof the pan being shown.

A are the bed-timbers, and B is the pan supported thereon, and havingthe cone center 1). C are the sides; I), the mailers; E, the arms of themullers, 1*, the rotating head to which the arms are secured; G, theshaft for driving the head, and H the adj Listing-screws. These are allparts common to this class of pan.

In order to provide a steam-chamber or space of as great an extent aspossible to obtain a large heating-surthce, I'have the plate, piece, orcasting I, which is formed with an annular plane surtace, 2', a conecenter, i, and a tubular extension, i". This is fitted to the under sideof the pan, as shown in Fig. 1, its cone extending upwardly within thecone [2 of the pan and its tubular extension projecting through andbeyond said cone into the head F and forming the bearing for the shaftG. A space, J, is left between the piece I and the bottom and cone ofthe pan, forming the steanr chamber, a packing being placed at j in anannular rib, j, under the pan, and a rust or other steam-tight jointbeing formed atj", between the top of the cone 1) and the base of thetubular extension 1". The piece I is tightened to its seat by screws 7;.L L are the steamports communicating with the chamber J. It will thus beseen that both the bottom and the cone of the pan are adapted to beheated, and that the construction is simple, practical, and durable.

I am aware that steam chambers have been heretofore provided for thebottom of the pan, and also for the-cone, separately, but as far as Iknow a continuous steam-chamber in a sin- 5 gle pan for both bottom andcone has never been used.

In addition to forming the seat for the packing, the riloj, inconnection with an inner and concentric rih,j, on the bottom of the pan,serves another purpose. When the shoes and dies are not fittedaccurately in the same vertical plane, it is not unusual for the edgesof the former to be worn into a point and those of the latter to bebeveled or rounded down. This brings the shoes into contact with thebottom of the pan, whiclnbeing of much softer iron, soon wears through;but by having these ribs at this point of wear the pan cannot be wornthrough.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In an amalgamating-pan, a continuous steam chamber or space under thebottom of 7 the pan, and behind or within its cone center, substantiallyas herein described.

2. In an amalgamating-pan, the combina tion of the pan B, having a conecenter, b,

with the piece, plate, or casting I, having a s cone center, i, saidpiece, plate, oncastingbeing so fitted and secured to the pan as toleavea chamber or space, J, under the bottom of the pan and behind orwithin the cone enter 1), substantially as herein described. 8

3. In an amalgamating pan, the pan B, having a cone center, I), and anannular rib or flange, j, on its bottom, in combination with the piece,plate, or casting I, having a cone center, i, and tilted under the panagainst the rib or flange with suitable packin its cone center fittingup within cone 1) of the pan and united with the top of said cone by asteamtight joint, whereby a steainchamber, J, is formed under the panand behind or within its cone, substantially as herein described.

4. In an amalgamating-pan, the combination of the pan 13, having conecenter Z), with the piece, plate, or casting I, having an annu larportion or rim, 6, a cone center, i, and tubular extension L, saidpiece, plate, or casting being so fitted and secured to the pan as toleave a steam chamber or space, J, under the pan and behind or withinits cone centor, the tubular extension passing upwardly 6. In ananialgamating-pan, the pan B, havthrough and. united with said conecenter, ing the annular ribs j on its bottom in the and forming thebearing for the driving-shaft vertical plane approximately of the outerand I 5 substantially as herein described. inner edge of the dies andshoes, substantially 5 5. In an amalgalnating-pan, the pan B, haV- andfor the purpose as herein described.

ing cone center b, in combination with the In witness whereof I havehereunto set my piece, plate, or casting I, as described, and hand. sofitted and secured to the pan as to form a steam chamber or space, J,under the pan and MARTIN Boss 10 behind or Within its cone center, andthe Witnesses:

steam-ports L L, communicating with said O. D. COLE,

chamber, substantially as herein described. J. H. BLOOD.

